Quantum dots (QDs) are ideal color-conversion materials for display fields. Preparation of micro-nanostructures is a mainstream method for obtaining a high photoluminescence (PL) intensity. Electrical induction, a method of preparing micro-nanostructures, was introduced to obtain QD films with high PL performance by preparing a sandwich column array structure (SCAS). By changing the spacer thickness, a series of SCAS-QD films were fabricated, after optimizing the voltage. The SCAS-QD layers with a 25- $\mu \text{m}$ spacer obtained the maximum PL enhancement of green light intensity: up to 42.8%. The enhancement was caused by the microcavity trapping and light extraction effects. The former could increase the utilization factor of blue light and the latter could increase the emission probability of green light. This is a simple, high-efficient, and low-cost method for preparing QD films with high PL performance without increasing the QD concentration.

中文翻译：

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均匀电感应增强夹心柱阵列结构量子点薄膜的光致发光强度

量子点 (QD) 是用于显示领域的理想颜色转换材料。微纳米结构的制备是获得高光致发光 (PL) 强度的主流方法。电感应是一种制备微纳米结构的方法，通过制备夹心柱阵列结构（SCAS）获得具有高PL性能的QD薄膜。通过改变隔离物厚度，在优化电压后制造了一系列 SCAS-QD 薄膜。SCAS-QD 层具有 25- $\mu \text{m}$ 间隔器获得了最大的绿光强度PL增强：高达42.8%。这种增强是由微腔捕获和光提取效应引起的。前者可以提高蓝光的利用率，后者可以提高绿光的发射概率。这是一种在不增加 QD 浓度的情况下制备具有高 PL 性能的 QD 薄膜的简单、高效和低成本的方法。